1212012010111 has 8 divisors (see below), whose sum is σ = 1390267864064. Its totient is φ = 1035033976440.

The previous prime is 1212012010043. The next prime is 1212012010117. The reversal of 1212012010111 is 1110102102121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212012010111 - 2⁹ = 1212012009599 is a prime.

It is a super-2 number, since 2×1212012010111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212012010091 and 1212012010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212012010117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319453035 + ... + 319456828.

It is an arithmetic number, because the mean of its divisors is an integer number (173783483008).

Almost surely, 2^{1212012010111} is an apocalyptic number.

1212012010111 is a deficient number, since it is larger than the sum of its proper divisors (178255853953).

1212012010111 is an equidigital number, since it uses as much as digits as its factorization.

1212012010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638910141.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1212012010111 its reverse (1110102102121), we get a palindrome (2322114112232).

It can be divided in two parts, 121201 and 2010111, that added together give a palindrome (2131312).

The spelling of 1212012010111 in words is "one trillion, two hundred twelve billion, twelve million, ten thousand, one hundred eleven".